My recipe is from my uncle. His is better.
2qts store bought egg nog.
1qt egg nog ice cream (uncle owned a Baskin Robins)
Makers Mark to taste.
I made this last year and apparently, since I check for "taste" as I'm making it, and end up a couple shots deep before I'm done, my egg nog was a bit stout. I brought it to a party and brought the rest of the Makers Mark with me so people could add more if they thought it was too weak. I asked the hostess to try it, and she coughed, "it's good."